Page 41
DIA
GR
AMS
INSTALLATION
L
N
E
Mai
n
s s
u
pply
23
0V
A
C
~
5
Amp
5
A
Lo
c
a
l
d
o
uble
po
le
iso
la
to
r
Sy
s
tem
p
u
m
p
Boil
e
r w
iri
ng te
rm
inals
L
N
E
S
L
L
N
E
boi
ler
pum
p
C
H
& H
W
Pr
o
g
ra
mm
e
r
HW
OFF
HW
ON
CH
OF
F
CH
ON
L
N
1
4
3
2
B
r B
r
Ro
om
th
ermo
s
tat
ON OFF
1
E
2
4
3
S
tor
e
s
tat
ON O
F
F
C
E
1
2
1
2
3
4
5
6
7 8
9
10
11
1
2
Cent
ra
l h
e
atin
g
Zo
ne
v
a
lv
e
L
N
E
S
1
S
2
Bl
G/
Y
B
r
Or
an
ge
Gr
e
y
Ju
n
c
ti
o
n
bo
x
E
N
L
Hot
w
a
te
r h
eatin
g
Zo
ne v
a
lv
e
L
N
E
S
1
S
2
Bl
G/
Y
Br
Or
an
ge
Gr
e
y
Fig
u
re
5.4 :
To
rre
nt
RE-Solar
–
Example w
iring
d
iag
ra
m
fo
r ‘S’
Plan h
eati
n
g sy
s
te
m
w
ith
ty
p
ic
a
l
s
o
la
r h
e
ati
n
g
sy
st
e
m
PRV
So
la
r
pu
m
p
in
g
station
So
la
r panels
S1
S
1
:
So
la
r f
lo
w
t
e
mp
er
at
u
re
s
e
ns
or
S2
:
S
o
la
r z
one sto
re
t
e
m
p
era
ture
se
n
s
o
r
S
3
:
St
o
re ov
er
h
e
a
t
te
mp
er
at
u
re s
e
ns
or
/T
he
rm
o
s
ta
t
P1
S2
S3
To
rre
nt RE
E
C
1 2
on
off
NO
T
E
W
it
h
s
o
me so
la
r
c
o
ntrol
lers do not
h
a
v
e
over
h
e
at s
e
nsor,
S3, as s
how
n a
b
o
v
e
In
this c
a
se
th
e m
e
ch
anic
al o
v
e
rh
e
at
th
e
rm
o
s
tat
(S3
)
m
a
y
use
d
and
w
ire
d
as
sho
w
n i
n
f
igu
re 4.
4
to
p
rote
c
t the sto
re
f
ro
m
o
v
e
r h
e
a
ting b
y
s
toppi
n
g
the
s
o
la
r
Pu
m
p
at pr
e-se
t
te
mp
e
ra
ture
l
imit
B
o
iler ho
ld o
ff
p
ip
e
t
h
erm
o
stat
T
y
pe
LL
64
1B
1
0
1
2
Te
mp
er
a
tu
re r
a
n
g
e:
50
– 9
5
o
C
NOTE
As
pa
rt
of
sy
ste
m
s
e
tu
p
a
n
d
c
o
mm
is
si
o
n
in
g
,
it
is
importa
n
t that
th
is
bo
ile
r hol
d
-o
ff
pipe
th
er
m
o
s
ta
t
be
a
d
ju
s
te
d
t
o
find
the
be
s
t
s
e
tt
in
g
f
o
r ea
c
h
i
n
d
iv
id
u
a
l in
s
ta
lla
tion.
Failu
re
t
o
d
o
s
o
w
ill
giv
e
u
n
d
e
r
p
e
rf
orma
nc
e of
eit
h
er th
e
boiler or t
h
e
so
la
r hea
ti
n
g
sy
s
tem
S1
S2
S3
E
N
R1
N
R1
N
L
1
2
3
4
5
6
7
8
12 13
1
4
15
16
1
7
18
1
9
20
Solar co
ntroll
er
Boil
e
r hol
d
o
ff pip
e
t
h
e
rm
o
s
tat
T
y
pe
LL
641B
1
0
12
Te
mpera
ture ra
n
g
e: 50 –
9
5
o
C
Summary of Contents for TORRENT COMBI-PREHEAT
Page 53: ...Page 53 APPENDIX C APPENDIX ...
